Natural hazards · Flandreau

Flandreau, SD natural hazards

Most of the natural-hazard damage FEMA expects in Flandreau comes from inland flooding, and overall the risk is high for a U.S. community.

FEMA National Risk Index, December 2025 · OpenFEMA claims, aid & declarations

Expected damage

How exposed is Flandreau?

High

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Flandreau to be higher than in 66% of U.S. communities, mostly from inland flooding and tornadoes.

Inland flooding35%Tornadoes21%Ice storms18%Cold waves12%Everything else15%

By hazard

What Flandreau faces

Each hazard’s share of the damage FEMA expects here, and how that compares with the rest of the country.

Inland flooding

35% of expected damage

Above average · higher than 72% of U.S. places

Recorded about 2 times a year in the area

Tornadoes

21% of expected damage

Well above average · among the top 1% of U.S. places

Recorded about once every 16 years in the area

Ice storms

18% of expected damage

Well above average · higher than 92% of U.S. places

Recorded about once a year in the area

Cold waves

12% of expected damage

Below average · higher than 34% of U.S. places

Recorded about 11 times a year in the area

Lower here

HailWinter weatherHeat wavesWildfireEarthquakesLandslidesStrong windLightningDrought

Not a risk here

Coastal floodingHurricanesAvalanchesTsunamisVolcanic activity

Flood risk changes street by street. Check a specific address on FEMA’s flood map, and ask about flood insurance before you buy.

Flood insurance claims

Does Flandreau flood?

FEMA's records show no paid flood insurance claims in Flandreau.

of homes in flood zones
are insured

of all homes
are insured

No community discount. Flandreau isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.

Insurance rates: Moody County.

Disasters that hit Flandreau

Federal disasters declared here

None of the disasters declared for Moody County shows FEMA aid or repair money reaching Flandreau itself in FEMA’s records.

Brought FEMA money into FlandreauDeclared for Moody County only

Moody County has had 18 natural disasters declared since 1953, most often floods and severe storms.

Around Flandreau

Flandreau and the towns around it

Very lowLowModerateHighVery high

Flandreaumostly inland floodingHigh

Spring Creekmostly inland floodingLow

Grovenamostly inland floodingLow

Unionmostly inland floodingLow

Claremostly inland floodingLow

About these numbers

How to read this page

An average, not a forecastFEMA’s National Risk Index estimates the damage 18 kinds of natural hazards cause in a typical year, from decades of records and models. A quiet decade can follow a bad year.

Compared by rate“Higher than N%” compares yearly damage as a share of what’s here, so a big city isn’t rated riskier just for having more buildings. Flandreau is smaller than a census tract, so it shares the figures of the tract around its center.

Money that reached townFlood claims are matched to Flandreau’s own flood-insurance community; household aid to the registrant’s city; repair grants to the Township of Flandreau. FEMA’s model follows property values, so a place that recently lost many homes can rate lower than it feels.

Sources: FEMA National Risk Index (December 2025); OpenFEMA: NFIP redacted claims, multiple-loss properties, community status book and residential penetration rates, housing assistance (owners and renters), public assistance funded projects, hazard mitigation properties and disaster declarations. Census tracts: U.S. Census Bureau.